Dimethylformamide → HCID 86684880, compound

Participants

Reaction Conditions

Reaction Steps

Under a nitrogen atmosphere, copper(I) iodide (7 mg), bis(triphenylphosphine)palladium(II) dichloride (90 mg) and triphenylphosphine (34 mg) were added to a dimethylformamide (45 mL) solution that contained 4-iodo-1-methyl-5-[4-(trifluoromethyl)phenyl]-1H-pyrazole (4.51 g), trimethylsilylacetylene (2.26 g) and triethylamine (3.57 mL), and the obtained solution was then stirred at 75° C. for 4 hours. Thereafter, the reaction solution was diluted with ethyl acetate, and was then washed with water and a saturated saline. The organic layer was dried over anhydrous sodium sulfate, and was then concentrated under a reduced pressure. The residue was purified by column chromatography (silica gel 60N, hexane:ethyl acetate=85:15 to 70:30), so as to obtain the title compound (3.46 g).

Provenance & Evidence